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IB Biology: Option A (Neurobiology) with Complete Solutions
IB Biology: Option A (Neurobiology) with 
 
Complete Solutions 
 
Neural tube - develops by neurulation 
- elongates as embryo grows 
- develops in first month of gestation (humans) 
 
Neurulation development of a dorsal nerve cord at an early stage in development in 
chordates 
 
Neural pruning removal of dendrites and axon branches from some neurons 
 
Medulla oblongata controls autonomic activities e.g. swallowing, digestions, vomiting, 
breathing, heart rate 
 
Cerebellum coordinates unconsc...
- Exam (elaborations)
- • 7 pages •
IB Biology: Option A (Neurobiology) with 
 
Complete Solutions 
 
Neural tube - develops by neurulation 
- elongates as embryo grows 
- develops in first month of gestation (humans) 
 
Neurulation development of a dorsal nerve cord at an early stage in development in 
chordates 
 
Neural pruning removal of dendrites and axon branches from some neurons 
 
Medulla oblongata controls autonomic activities e.g. swallowing, digestions, vomiting, 
breathing, heart rate 
 
Cerebellum coordinates unconsc...
IB Biology Topic 4 : Ecology Latest Version Graded A+
IB Biology Topic 4 : Ecology Latest 
 
Version Graded A+ 
 
Ecology The science of the relationships between organisms and their environments. 
 
Organism an individual living thing that uses energy, reproduces, responds, grows, and 
develops 
 
Species a group of similar organisms that can breed and produce fertile offspring 
 
Population group of individuals of the same species that live in the same area 
 
Community all living, or biotic, things in an area 
 
Ecosystem all biotic (living) and...
- Exam (elaborations)
- • 11 pages •
IB Biology Topic 4 : Ecology Latest 
 
Version Graded A+ 
 
Ecology The science of the relationships between organisms and their environments. 
 
Organism an individual living thing that uses energy, reproduces, responds, grows, and 
develops 
 
Species a group of similar organisms that can breed and produce fertile offspring 
 
Population group of individuals of the same species that live in the same area 
 
Community all living, or biotic, things in an area 
 
Ecosystem all biotic (living) and...
IB Biology Topic 1: Cell Biology Questions and Answers Already Passed
IB Biology Topic 1: Cell Biology 
Questions and Answers Already Passed 
 
What does cell theory state? That cells are the smallest possible unit of life and that living 
organisms are made up of cells. 
 
What are unicellular organisms? Give two examples Unicellular organisms are organisms 
with only one cell, such as Paramecium and Chlamydomonas. In unicellular organisms the one 
cell carries out all of the functions of life. 
 
Why are large organisms multicellular? Because of surface area to ...
- Exam (elaborations)
- • 20 pages •
IB Biology Topic 1: Cell Biology 
Questions and Answers Already Passed 
 
What does cell theory state? That cells are the smallest possible unit of life and that living 
organisms are made up of cells. 
 
What are unicellular organisms? Give two examples Unicellular organisms are organisms 
with only one cell, such as Paramecium and Chlamydomonas. In unicellular organisms the one 
cell carries out all of the functions of life. 
 
Why are large organisms multicellular? Because of surface area to ...
IB Biology - Topic 3 – Genetics Latest 2024 Graded A+
IB Biology - Topic 3 – Genetics Latest 
 
2024 Graded A+ 
 
Define gene. A heritable factor that consists of a length of DNA (not an entire chromosome) 
and influences a specific characteristic 
 
Define allele. Various forms of a gene 
 
Define locus. The position a gene occupies on one type of chromosome 
 
Define genome. The whole genetic information of an organism 
 
How do alleles differ from one another? By a few differences in DNA base sequence 
 
What is the genome size (million base p...
- Exam (elaborations)
- • 8 pages •
IB Biology - Topic 3 – Genetics Latest 
 
2024 Graded A+ 
 
Define gene. A heritable factor that consists of a length of DNA (not an entire chromosome) 
and influences a specific characteristic 
 
Define allele. Various forms of a gene 
 
Define locus. The position a gene occupies on one type of chromosome 
 
Define genome. The whole genetic information of an organism 
 
How do alleles differ from one another? By a few differences in DNA base sequence 
 
What is the genome size (million base p...
IB Biology Practice Exam Questions with Verified Solutions
IB Biology Practice Exam Questions 
 
with Verified Solutions 
 
What are the three main parts of the cell theory? What are some possible exceptions? 
 
Practice Question 1. All living things are composed of cells. 
2. Cells are the smallest unit of life 
 
3. Cells come from pre-existing cells 
 
Exceptions: Viruses: living or not? and amoeba 
 
What are the basic functions of life? What organisms carry out these functions? Metabolism, 
response, homeostasis, growth, reproduction and nutrition....
- Exam (elaborations)
- • 8 pages •
IB Biology Practice Exam Questions 
 
with Verified Solutions 
 
What are the three main parts of the cell theory? What are some possible exceptions? 
 
Practice Question 1. All living things are composed of cells. 
2. Cells are the smallest unit of life 
 
3. Cells come from pre-existing cells 
 
Exceptions: Viruses: living or not? and amoeba 
 
What are the basic functions of life? What organisms carry out these functions? Metabolism, 
response, homeostasis, growth, reproduction and nutrition....
IB Bio A1.1 Water Questions and Answers Graded A+
IB Bio A1.1 Water Questions and 
 
Answers Graded A+ 
 
List reasons why water is a substance on which life depends. 
A1.1.1 - Water as medium of life. 
1. The first cells originated in water. 
 
2. Water is the "universal solvent" allowing it to dissolve and transport molecules around a body. 
 
3. Water is a metabolite in condensation and hydrolysis reactions. 
 
4. Water is a temperature buffer in bodies and ecosystems. 
 
5. Water maintains biological structures (such as phospholipid bilay...
- Exam (elaborations)
- • 24 pages •
IB Bio A1.1 Water Questions and 
 
Answers Graded A+ 
 
List reasons why water is a substance on which life depends. 
A1.1.1 - Water as medium of life. 
1. The first cells originated in water. 
 
2. Water is the "universal solvent" allowing it to dissolve and transport molecules around a body. 
 
3. Water is a metabolite in condensation and hydrolysis reactions. 
 
4. Water is a temperature buffer in bodies and ecosystems. 
 
5. Water maintains biological structures (such as phospholipid bilay...
IB Biology semester 1 Latest Version Graded A+
IB Biology semester 1 Latest Version 
 
Graded A+ 
 
Cells Smallest functional unit of an organism 
 
What are the principles of cell theory? 1. All living things are made of cells 
2. Cells are smallest unit of life 
3. Cells come from pre-existing cells 
 
What are the properties of life? Metabolism 
Reproduction 
Growth 
 
Response 
Excretion 
Homeostasis 
Nutrition 
 
Prokaryotic cells Single cell which has neither a distinct nucleus or organelles can be an 
organism (e.g. bacteria) 
 
Flage...
- Exam (elaborations)
- • 38 pages •
IB Biology semester 1 Latest Version 
 
Graded A+ 
 
Cells Smallest functional unit of an organism 
 
What are the principles of cell theory? 1. All living things are made of cells 
2. Cells are smallest unit of life 
3. Cells come from pre-existing cells 
 
What are the properties of life? Metabolism 
Reproduction 
Growth 
 
Response 
Excretion 
Homeostasis 
Nutrition 
 
Prokaryotic cells Single cell which has neither a distinct nucleus or organelles can be an 
organism (e.g. bacteria) 
 
Flage...
Curriculum & Instruction GACE Questions and Answers Already Passed
Curriculum & Instruction GACE 
Questions and Answers Already Passed 
 
A teacher begins a lesson by asking students to list 3 types of bears. Students list only black 
bears and brown bears until the teacher shows a picture of a polar bear and panda bear. Which 
theory is best illustrated in the scenario? Schema theory 
 
Which of the following learning theories suggests that interaction with more knowledgeable 
models, such as a teacher or more advanced peer, directly affects the process of lea...
- Exam (elaborations)
- • 22 pages •
Curriculum & Instruction GACE 
Questions and Answers Already Passed 
 
A teacher begins a lesson by asking students to list 3 types of bears. Students list only black 
bears and brown bears until the teacher shows a picture of a polar bear and panda bear. Which 
theory is best illustrated in the scenario? Schema theory 
 
Which of the following learning theories suggests that interaction with more knowledgeable 
models, such as a teacher or more advanced peer, directly affects the process of lea...
GACE 081 & 082 Latest Version Graded A+
GACE 081 & 082 Latest Version 
 
Graded A+ 
 
Components of a Lesson Plan Materials, Clear objective, Set the stage(activate prior 
knowledge), Direct Instruction, Guided Practice, Closure, and Demonstration of Learning (Quick 
assessment) 
 
Characteristics of a Lesson Plan Plan for the lesson developed by a teacher that guides 
instruction and maximizes class time by ensuring the teacher is prepared. 
 
What are the two components of a learning objectives? Measurable and appropriate 
 
What do...
- Exam (elaborations)
- • 7 pages •
GACE 081 & 082 Latest Version 
 
Graded A+ 
 
Components of a Lesson Plan Materials, Clear objective, Set the stage(activate prior 
knowledge), Direct Instruction, Guided Practice, Closure, and Demonstration of Learning (Quick 
assessment) 
 
Characteristics of a Lesson Plan Plan for the lesson developed by a teacher that guides 
instruction and maximizes class time by ensuring the teacher is prepared. 
 
What are the two components of a learning objectives? Measurable and appropriate 
 
What do...
GACE Middle Grades Science Latest Update with Verified Answers
GACE Middle Grades Science Latest 
Update with Verified Answers 
 
tidal hypothesis Theory that the solar system started with a near collision of sun and large 
star. Few astronomers believe this theory. 
 
condensation hypothesis solar system began with rotating clouds of dust and gas. 
Condensation happened in center to form sun, and smaller parts of clouds formed. More 
astronomers believe in this idea. 
 
Core Outer core- liquid; inner core- solid. Very dense in center. Believed that core is...
- Package deal
- Exam (elaborations)
- • 54 pages •
GACE Middle Grades Science Latest 
Update with Verified Answers 
 
tidal hypothesis Theory that the solar system started with a near collision of sun and large 
star. Few astronomers believe this theory. 
 
condensation hypothesis solar system began with rotating clouds of dust and gas. 
Condensation happened in center to form sun, and smaller parts of clouds formed. More 
astronomers believe in this idea. 
 
Core Outer core- liquid; inner core- solid. Very dense in center. Believed that core is...
NCCER Test Questions and Answers 100% Pass
What does NEC article 100 contain?
Texas LPC Jurisprudence Exam Latest 2023 Graded A+
HESI A2 Reading Comprehension Passages – 1 Already Passed
Tennessee Health Exam Questions and Answers Graded A+
Cosmetology Clinical exam Questions and Answers 100% Pass